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A piece of copper of mass m1 = 300 g wit...

A piece of copper of mass `m_1 = 300 g` with initial temperature `t_1 = 97 ^@C` is placed into a calorimeter in which the water of mass `m_2 = 100 g` is at a temperature `t_2 = 7 ^@ C`. Find the entropy increment of the system by the moment the temperature `t_2 = 7 ^@ C`. FInd the entropy increment of the system by the moment the temperatures equalize. The heat capacity of the calorimeter itself is negligibly small.

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